<?php session_start(); ?>
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
  <?php 
      include  'HeaderNav.html';  
  ?>

<img  src="Images/main.jpg"  style="margin-top: 80px" /> 

<p>
<?php
 if(isset($_SESSION['stuno'])){
    echo $_SESSION['stuno'].",欢迎访问学生信息管理系统！<a href='logout.php'>注销</a>";
 }else{
    echo "欢迎访问！";
 }
 ?>
 </p>

  <?php 
       include  'Footer.html';   
  ?>

</body>
</html>